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author | spashabk-in <shakeebbk@in.ibm.com> | 2018-08-13 02:33:28 -0500 |
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committer | Sachin Gupta <sgupta2m@in.ibm.com> | 2018-09-21 06:12:53 -0500 |
commit | e1a4637ad7c4f86f456f15ea538823db60287b78 (patch) | |
tree | b373b3c1a38beb8368b9e7644af67c3cb0aaeff5 /src/import/chips/p9/procedures/hwp/perv/p9_lpc_utils.H | |
parent | 26acfd0fd5e7df0053336bd8ee1baba9e1e926dc (diff) | |
download | talos-sbe-e1a4637ad7c4f86f456f15ea538823db60287b78.tar.gz talos-sbe-e1a4637ad7c4f86f456f15ea538823db60287b78.zip |
Support 1byte data access on LPC
Currently LPC driver supports only 4bytes data access,
with this commit introducing support for 1byte and
also a way to extend this to 2bytes.
RTC: 194000
Change-Id: I7cb258425100c2d2a3e78f35f0aaf7da1c0e8508
Reviewed-on: http://rchgit01.rchland.ibm.com/gerrit1/64174
Tested-by: Jenkins Server <pfd-jenkins+hostboot@us.ibm.com>
Tested-by: HWSV CI <hwsv-ci+hostboot@us.ibm.com>
Tested-by: PPE CI <ppe-ci+hostboot@us.ibm.com>
Reviewed-by: Joachim Fenkes <fenkes@de.ibm.com>
Tested-by: Hostboot CI <hostboot-ci+hostboot@us.ibm.com>
Reviewed-by: RAJA DAS <rajadas2@in.ibm.com>
Reviewed-by: Jennifer A. Stofer <stofer@us.ibm.com>
Reviewed-on: http://rchgit01.rchland.ibm.com/gerrit1/64176
Tested-by: FSP CI Jenkins <fsp-CI-jenkins+hostboot@us.ibm.com>
Reviewed-by: Sachin Gupta <sgupta2m@in.ibm.com>
Diffstat (limited to 'src/import/chips/p9/procedures/hwp/perv/p9_lpc_utils.H')
-rw-r--r-- | src/import/chips/p9/procedures/hwp/perv/p9_lpc_utils.H | 37 |
1 files changed, 35 insertions, 2 deletions
diff --git a/src/import/chips/p9/procedures/hwp/perv/p9_lpc_utils.H b/src/import/chips/p9/procedures/hwp/perv/p9_lpc_utils.H index dcf452ad..b9c1650c 100644 --- a/src/import/chips/p9/procedures/hwp/perv/p9_lpc_utils.H +++ b/src/import/chips/p9/procedures/hwp/perv/p9_lpc_utils.H @@ -35,25 +35,58 @@ const uint32_t LPC_CMD_TIMEOUT_DELAY_NS = 1000000; const uint32_t LPC_CMD_TIMEOUT_DELAY_CYCLE = 1000000; const uint32_t LPC_CMD_TIMEOUT_COUNT = 20; +/* + * lpc_rw read or write on a LPC bus address + * + * i_target_chip reference to PROC target + * i_addr address on LPC bus to read or write to + * i_size size in bytes, currently supported 1 or 4 bytes + * i_read_notwrite is read and not write, default to true + * i_generate_ffdc if ffdc to be generated, default to true + * io_data reference to a buffer to hold requested data, upto 4bytes + * + * FAPI2_RC_SUCCESS if success, else error code + */ fapi2::ReturnCode lpc_rw( const fapi2::Target<fapi2::TARGET_TYPE_PROC_CHIP>& i_target_chip, const uint32_t i_addr, + const size_t i_size, const bool i_read_notwrite, const bool i_generate_ffdc, fapi2::buffer<uint32_t>& io_data); +/* + * lpc_read Read uint32_t register on LPC bus + * + * i_target_chip reference to PROC target + * i_addr address of the register + * o_data reference to output buffer + * i_generate_ffdc generate ffdc, default to true + * + * FAPI2_RC_SUCCESS if success, else error code + */ static inline fapi2::ReturnCode lpc_read( const fapi2::Target<fapi2::TARGET_TYPE_PROC_CHIP>& i_target_chip, uint32_t i_addr, fapi2::buffer<uint32_t>& o_data, bool i_generate_ffdc = true) { - return lpc_rw(i_target_chip, i_addr, true, i_generate_ffdc, o_data); + return lpc_rw(i_target_chip, i_addr, sizeof(uint32_t), true, i_generate_ffdc, o_data); } +/* + * lpc_write Write to uint32_t register on LPC bus + * + * i_target_chip reference to PROC target + * i_addr address of the register + * i_data data to be written + * i_generate_ffdc generate ffdc, default to true + * + * FAPI2_RC_SUCCESS if success, else error code + */ static inline fapi2::ReturnCode lpc_write( const fapi2::Target<fapi2::TARGET_TYPE_PROC_CHIP>& i_target_chip, uint32_t i_addr, fapi2::buffer<uint32_t> i_data, bool i_generate_ffdc = true) { - return lpc_rw(i_target_chip, i_addr, false, i_generate_ffdc, i_data); + return lpc_rw(i_target_chip, i_addr, sizeof(uint32_t), false, i_generate_ffdc, i_data); } #endif /* P9_LPC_UTILS_H_ */ |